Plug memory leak in _is_union_member
Plug memory leak in _is_union_member

When we found the member, unref the objects before breaking out of the
loop.

jdahlin/pygobject,MathieuDuponchelle/pygobject,davibe/pygobject,thiblahute/pygobject,MathieuDuponchelle/pygobject,sfeltman/pygobject,jdahlin/pygobject,MathieuDuponchelle/pygobject,GNOME/pygobject,pexip/pygobject,davibe/pygobject,davibe/pygobject,pexip/pygobject,sfeltman/pygobject,GNOME/pygobject,davidmalcolm/pygobject,GNOME/pygobject,davidmalcolm/pygobject,pexip/pygobject,davidmalcolm/pygobject,choeger/pygobject-cmake,choeger/pygobject-cmake,davibe/pygobject,thiblahute/pygobject,choeger/pygobject-cmake,jdahlin/pygobject,sfeltman/pygobject,thiblahute/pygobject